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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Operating expenses:        
Research and development $ 2,773 $ 1,420 $ 5,536 $ 4,403
General and administrative 2,203 1,924 4,416 4,169
Total operating expenses 4,976 3,344 9,952 8,572
Loss from operations (3,697) (1,490) (6,996) (6,212)
Other income (expense):        
Financing expense (3,545)   (3,545)  
Change in fair value of warrants 4,694   4,694  
Warrant issuance costs (432)   (432)  
Interest income 67 120 139 171
Interest expense (27) (112) (61) (246)
Total other income (expense) 757 8 795 (75)
Net loss $ (2,940) $ (1,482) $ (6,201) $ (6,287)
Per share information:        
Net loss per share of common stock - basic $ (0.45) $ (0.59) $ (1.15) $ (2.60)
Weighted average number of shares of common stock outstanding - basic 6,500,831 2,509,378 5,411,382 2,415,221
Net loss per share of common stock - diluted $ (0.71) $ (0.59) $ (1.45) $ (2.60)
Weighted average number of shares of common stock outstanding - diluted 10,742,924 2,509,378 7,532,428 2,415,221
Grant [Member]        
Revenue $ 1,279 $ 1,854 $ 2,956 $ 2,360